Ariz. Rev. Stat. § 38-747
A. A member who purchases credited service pursuant to section 38-738, 38-742, 38-743, 38-744, 38-745 or 38-922 shall either:
B. A member may elect to have the member's employer make payments for all or any portion of the amounts payable for the member's purchase of credited service pursuant to the sections prescribed in subsection A of this section through a salary reduction program in accordance with the following:
D. Any member contributions that are required by section 38-771, subsection D or that are allowed pursuant to section 38-771.01, subsection F, paragraph 3 are deemed to be made by the member to ASRS through a salary reduction program in accordance with the following:
E. The following limits apply to contributions to ASRS:
1. Except to the extent paragraphs 2 and 3 of this subsection apply to certain contributions made by a member to ASRS and to the extent permitted under section 414(v) of the internal revenue code, if applicable, in any one limitation year, the annual additions contributed or allocated to ASRS for or on behalf of a member shall not exceed the lesser of either:
2. Unless paragraph 4 of this subsection applies, for plan years beginning on or after July 1, 1998, in any one limitation year, the annual additions credited to ASRS for or on behalf of a member who makes contributions to ASRS to purchase credited service pursuant to section 38-743, 38-744, 38-745 or 38-922 and with respect to which an irrevocable election has not been made pursuant to subsection B of this section shall not exceed the greater of either:
4. Member contributions to ASRS to purchase credited service pursuant to section 38-743, 38-744 or 38-922 shall not be made by a member if recognition of that service would cause a member to receive a retirement benefit for the same service from ASRS and one or more other retirement plans. This paragraph does not apply to either of the following:
G. If, after the application of subsection F of this section, the annual additions on behalf of a member exceed the limitations prescribed in subsection E of this section, ASRS shall dispose of excess amounts by either of the following:
H. To the extent that a payment under this subsection does not alter, amend or revoke any one or more currently effective irrevocable elections made by the member pursuant to subsection B or D of this section, the board may accept contributions made pursuant to section 38-771 or member contributions for the payment for credited service purchases pursuant to section 38-738, 38-742, 38-743, 38-744, 38-745 or 38-922 or contributions made pursuant to section 38-771.01, subsection F, paragraph 4, in whole or in part, by any one or a combination of the following methods:
2. Subject to the limitations prescribed in sections 401(a)(31) and 402(c) of the internal revenue code and subsection J of this section, accepting a direct transfer of any eligible rollover distribution from one or more:
O. Annual additions on behalf of a member in any limitation year shall be the sum of:
R. For the purposes of this section: